Thrill-seekers searching for the new biggest, tallest or fastest roller coaster rush may be slightly disappointed. The 2007 class of coasters at amusement parks across America isn't a record-breaker. But there are still some offerings for the boardwalk adrenaline junkie, from new coasters that drop five degrees steeper than straight down to a seven-story swing in Missouri that takes riders 75 feet in the air.

Five initial public offerings had trading debuts Thursday, bringing mixed results and a message that biotech certainly isn't what the doctor ordered for the IPO market. Health and biotech deals continued to be a drag on IPOs, though even companies outside the sector had trouble selling new stock.